Q: Is the law of virtual crash Runge-Kutta?
Posted: Sat Oct 21, 2023 9:21 am
Question/Comment received today via email to our forum:
- "I think the law of virtual crash is Runge-Kutta"
- Not sure what you meant by "I think the law of virtual crash is Runge-Kutta'
Runge-Kutta is an integrator used in many simulation programs.
For exampe in the HVOSM simulation program, from page 116 of the original manual:- The numerical integration routine used provides the user with an Runge-Kutta classical fourth-order method as modified by E, K. Blum or the Adams-Moulton predictor-corrector method using the Runge-Kutta method for starting the process.
- For more on HVOSM see Ray McHenry's award winning IME paper from 1969 on HVOSM:
However for simulating collisions:- They are strapped by the simplification of instantaneous momentum exchange for collision interactions, like pc-crash
Both programs require the user to specify a very subjective point and angle for the instantaneous momentum exchange!
See our writeup on that Also see the many related topics in this forum topic Simplified Momentum Analysis, pc-crash, virtual crash
- The numerical integration routine used provides the user with an Runge-Kutta classical fourth-order method as modified by E, K. Blum or the Adams-Moulton predictor-corrector method using the Runge-Kutta method for starting the process.